Hub-boring machine



(No Model.) 3 Sheets'Sheet 1. F. B. DEMING.

HUB BORING MACHINE. No. 374,945. Patented Dec. 20, 1.887.

N. PETERs mbumo m hen Wahin wn, u'c

3 SheetsSheet 2.

(No Model.)

P. B. DEMING.

HUB BORING MACHINE.

' (No Model.)

3 Sheets-Sheet 3.

I. B. DEMING.

HUB BORING MACHINE.

No. 374,945. Patented Dec. 2.0 1887.

' UNITED STATES PATENT OFFICE.

FRANK B. DEMING, OF SALEM, OHIO.

HUB-BORING MACHINE.

SPECIFICATION forming part of Letters Patent No. 374,945, dated December 20, 1887.

Application filed October 11,1886. Serial No. 215,874. (No model.)

To all whom it may concern:

Be it known that I, FRANK B. DEMING, a citizen of the United States, residing at Salem, in the county of Columbiana and State of Ohio, have invented certain new and useful Improvements in Hub-Boring Machines; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in hub-boring machines of the class in which the hub is revolved and the boring-shaft has rectilinear, but not rotary, movement.

The invention consists in the construction shown and described, and particularly pointed out in the claims.

Referring to the drawings, Figure 1 is a perspective of the machine. Fig. 2 is a longitudinal vertical section thereof. Fig. 3 is a view showing the feed-nut and cap in detail. Fig. 4 is a perspective of the chuck-head with the scroll-plate removed. Fig. 5 is a view of the threaded side of thescroll-platein perspective, and Fig. 6 shows a section of the clamping mechanism at the heel of the swinging bearing on the line m :20, Fig. 2.

A represents the supporting bed or frame of the machine provided with vertical face-plate a at its front, cut out aunularly to form an opening for attaching and operating the hub and wheel clamping mechanism secured therein.

B is a swinging bearing for theboringshaft, having arms I) I), pivoted in cars on the back of the face-plate a and adjustably supported at its rear on the guide-plate O. The plate C is set upon its edge and screwed to the base through flanges or ears at its side. At its inner end is a perforation, c, occupied by the adjusting and clamping screw D. The screw Dis provided with a large milled head, to facilitate turning, and a pinion, d, inside the head, which is adapted to work in the elliptical slot b in the heel of the swinging bearing 13. The slot 1) has gear or cog rack at one side, whereby, when the 'screw D is turned, the pinion will work in the ratchet or cog rack, and adjust the bearing higher or lower at that point, as may be desired. A nut, 12, Fig. 6, on the opposite end of the screw, serves to clamp and hold the parts in adjusted position. The bearing B is further provided with a socket, b vertically in its center, and a yoke, 12, rising from the sides of the socket and having sufficient elevation to permit the necessary adjustment of the boringshaft, as will be described hereinafter.

E is the boring or cutter shaft, screwthreaded about its outer portion, and suitably constructed at its inner end for attaching the bits or cutters. This shaft is incased throughout its greater length in a sleeve, G, which in turn rests in a hub, H,that encircles the sleeve, and has a trunnion, h, supporting the hub in the socket b of the bearing B. A handled screw, 1, passes through the arch of the yoke 1), into the-hub H, to raise or lower it in the socket, and thereby adjust the cutter-shaft to any desired elevation in determining the size of the bore. The outer end of the cutter-shaft is swiveled in a standard, K, having a bifurcated end embracing the guide plate and adapted to ride thereon as the shaft is ad justed in'either direction.

L is the clamping-head,having the inwardlyprojecting annular flange l, which fits within the opening in the faceplate a and forms a casing for the scroll-plate M. The head Lhas a central opening, 1, and slots Z radiating therefrom, in which are located the dogs it. These dogs have grooves in their edges,which hold them in the slots,and teeth on their inner sides to engage with the threads at on the scroll-plate. When the parts are placed in working position on the supporting-frame,they are held together and secured to the face-plate of the frame by clips and bolts n.

On the periphery of the clamping or chuck head are bolted short arms Z, having suitable screw-holders, Z*, for the spokes of the wheel, and a handle, 1, on one of the arms for turning the head during the operation of boring. A pin, Z, on the inside of the chuck'head projects through the opening in the scroll-plate and engages a pin, 0, on the collar 0 on the inner end of the sleeve G. The pin 0 is piv oted, so that it can readily be thrown into or out of engagement with the pin Z, and a setscrew fixes the collar 0 on the sleeve.

1? is the feed-nut, formed in two separate sec tions, 19 p, pivoted, respectively, on the head of the sleeve G at 1), and having screw-heads or projections p which enter the eccentric slots 9 in the cap Q. A set-screw, q, on the cap Q is adapted to work in an annular groove in the head of the sleeve to fasten the cap thereon and hold it on the feed-nut. an opening through which the cutter-shaft is free to slide without engaging the threads, and by means of its eccentric slots and the screw-heads on the nut working therein serves to throw the nut into or out of engagement with the shaft. It is the work of an instant to turn the nut and effect either result, as may be desired. The scroll-plate has two or more bosses, m, at intervals on its outer face, into which a lever or bar may be inserted for turning said plate and adjusting the dogs toward or from the center, according as the hub is to be fastened or released. The dogs being set by this means will be held there by the scrollplate, and all the parts will revolve together with the chuck-head when turned.

The screw 1) and its associated mechanism isdesigned to regulate the taper of the bore, and the screw I in the yoke of the bearing to regulate the cut as to size. The range of adjustment in both cases is ample for all practical purposes, and the degree of adjustment can by the mechanism thus provided he regu lated with fineness and accuracy.

The operation of the machine will be obvious from the foregoing description. The cutter having been set to do the desired work, the feed-nut and the pins Z and 0 thrown into engagement, and the head L being revolved, the cutter-shaft will be fed forward into the wheelhub by the feed-nut turning on the screwthreaded outer shaft. The sleeve G of course will be'turned by the action of the chuck-head5 but the cuttershaft will simply have a longitudinal movement.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. In a hub-boring machine, asupportingframe, a bearing adjustable 011 said frame, a hub adjustable in said bearing, a sleeve passing through the hub, and a cutter-shaft extending through the sleeve, substantially as set forth.

2. In a hub-boring machine, a pivoted bearing and a hub set into said bearing and independently adjustable therein, in combination with a sleeve constructed to turn in the hub, and a cutter-shaft in the sleeve and longitudipalllyl' adjustable therein, substantially as set ort The cap has- 3. In a hub-boring machine, a main frame, a bearing for the cutter-shaft adjustable in a circle on said frame, whereby the taper of the bore is regulated, a cutter-shaft, and a support therefor adjustable on the aforesaid bearing to regulate the diameter of the cut in the hub, in combination with a sleeve upon the cuttershaft, and mechanism for turning thesleeve and feeding the cutter, substantially as set forth.

4. In a hub-boring machine, a cutter-shaft, a sleeve for feeding the cutter, and a support for said parts pivoted and adjustable on the main frame, in combination with a hub in which the sleeve is constructed to turn and which is adjustable upon the aforesaid support,

whereby the position of the cutter-shaft as to a pitch and diameter of cut may be regulated, substantially as set forth.

5. In a hub-boring machine, a supportingframe, a bearing for the cutter-shaft pivoted thereon and having a socket and yoke, in combination with a hub adjustable in the socket, and a sleeve for the cutter-shaft extending through the hub, substantially as set forth.

6. In a hub-boring machine, ayoke pivoted on the main frame at one side and adjustable on the other and a hub vertically adjustable in the yoke, in combination with a cutter-shaft and a feeding-sleeve supported in the yoke, substantially as set forth.

7. Inahub-boring machine, abearing-frame, a hub for carrying the cutter-shaft,and an ad justing device in the bearingframe to raise and lower the hub independent of said frame, in combination with a cuttershaft and a sleeve passing through the hub, substantially as set forth.

8. In ah ub-bori ng machine,ascrew-threaded cutter-shaft and a sleeve thereon having a head at its outer end, in combination with a sectional nut, the sections of which are separately pivoted on the face of said head and have projections which work in eccentric slots in a cap, and said cap, which incloses said nut and the sleeve-head, substantially as set forth.

In testimony whereofIsign this specification, in the presence of two witnesses, this 5th day of October, 1886.

FRANK B. DEMING.

W'itnesses:

ROBERT HALE, \V. W; HALE.

ICO 

